Modeling the influence of bubble pressure on grain boundary separation and fission gas release

Pritam Chakraborty; Michael R. Tonks; Giovanni Pastore

doi:10.1016/j.jnucmat.2014.04.023

Modeling the influence of bubble pressure on grain boundary separation and fission gas release

Pritam Chakraborty
, Michael R. Tonks
, Giovanni Pastore

Research output: Contribution to journal › Article › peer-review

23 Scopus citations

Abstract

Grain boundary (GB) separation as a mechanism for fission gas release (FGR), complementary to gas bubble interlinkage, has been experimentally observed in irradiated light water reactor fuel. However there has been limited effort to develop physics-based models incorporating this mechanism for the analysis of FGR. In this work, a computational study is carried out to investigate GB separation in UO₂ fuel under the effect of gas bubble pressure and hydrostatic stress. A non-dimensional stress intensity factor formula is obtained through 2D axisymmetric analyses considering lenticular bubbles and Mode-I crack growth. The obtained functional form can be used in higher length-scale models to estimate the contribution of GB separation to FGR.

Original language	English (US)
Pages (from-to)	95-101
Number of pages	7
Journal	Journal of Nuclear Materials
Volume	452
Issue number	1-3
DOIs	https://doi.org/10.1016/j.jnucmat.2014.04.023
State	Published - Sep 2014

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics
General Materials Science
Nuclear Energy and Engineering

Access to Document

10.1016/j.jnucmat.2014.04.023

Cite this

@article{37276ad50c2c4f108118fe9523a73371,

title = "Modeling the influence of bubble pressure on grain boundary separation and fission gas release",

abstract = "Grain boundary (GB) separation as a mechanism for fission gas release (FGR), complementary to gas bubble interlinkage, has been experimentally observed in irradiated light water reactor fuel. However there has been limited effort to develop physics-based models incorporating this mechanism for the analysis of FGR. In this work, a computational study is carried out to investigate GB separation in UO2 fuel under the effect of gas bubble pressure and hydrostatic stress. A non-dimensional stress intensity factor formula is obtained through 2D axisymmetric analyses considering lenticular bubbles and Mode-I crack growth. The obtained functional form can be used in higher length-scale models to estimate the contribution of GB separation to FGR.",

author = "Pritam Chakraborty and Tonks, \{Michael R.\} and Giovanni Pastore",

note = "Funding Information: This work was funded by the DOE Nuclear Energy Advanced Modeling and Simulation Program .",

year = "2014",

month = sep,

doi = "10.1016/j.jnucmat.2014.04.023",

language = "English (US)",

volume = "452",

pages = "95--101",

journal = "Journal of Nuclear Materials",

issn = "0022-3115",

publisher = "Elsevier B.V.",

number = "1-3",

}

TY - JOUR

T1 - Modeling the influence of bubble pressure on grain boundary separation and fission gas release

AU - Chakraborty, Pritam

AU - Tonks, Michael R.

AU - Pastore, Giovanni

N1 - Funding Information: This work was funded by the DOE Nuclear Energy Advanced Modeling and Simulation Program .

PY - 2014/9

Y1 - 2014/9

N2 - Grain boundary (GB) separation as a mechanism for fission gas release (FGR), complementary to gas bubble interlinkage, has been experimentally observed in irradiated light water reactor fuel. However there has been limited effort to develop physics-based models incorporating this mechanism for the analysis of FGR. In this work, a computational study is carried out to investigate GB separation in UO2 fuel under the effect of gas bubble pressure and hydrostatic stress. A non-dimensional stress intensity factor formula is obtained through 2D axisymmetric analyses considering lenticular bubbles and Mode-I crack growth. The obtained functional form can be used in higher length-scale models to estimate the contribution of GB separation to FGR.

AB - Grain boundary (GB) separation as a mechanism for fission gas release (FGR), complementary to gas bubble interlinkage, has been experimentally observed in irradiated light water reactor fuel. However there has been limited effort to develop physics-based models incorporating this mechanism for the analysis of FGR. In this work, a computational study is carried out to investigate GB separation in UO2 fuel under the effect of gas bubble pressure and hydrostatic stress. A non-dimensional stress intensity factor formula is obtained through 2D axisymmetric analyses considering lenticular bubbles and Mode-I crack growth. The obtained functional form can be used in higher length-scale models to estimate the contribution of GB separation to FGR.

UR - https://www.scopus.com/pages/publications/84901398255

UR - https://www.scopus.com/pages/publications/84901398255#tab=citedBy

U2 - 10.1016/j.jnucmat.2014.04.023

DO - 10.1016/j.jnucmat.2014.04.023

M3 - Article

AN - SCOPUS:84901398255

SN - 0022-3115

VL - 452

SP - 95

EP - 101

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

IS - 1-3

ER -

Modeling the influence of bubble pressure on grain boundary separation and fission gas release

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this